Patents by Inventor Christine Speigelberg

Christine Speigelberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Single-frequency narrow linewidth 1?m fiber laser
    Patent number: 6982997
    Abstract: A compact single frequency, single-mode 1 ?m fiber laser with narrow linewidth (<10 kHz) and high output power (>2 mW) is formed with an oxide-based multi-component glass fiber doped with triply ionized rare-earth ytterbium ions and fiber gratings formed in sections of passive silica fiber and fused thereto. The multi-component glass supports higher doping concentrations than standard silica fiber, hence higher output power levels in short cavities. Formation of the gratings in passive silica fiber both facilitates splicing to other optical components and reduces noise thus improving linewidth.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: January 3, 2006
    Assignee: NP Photonics, Inc.
    Inventors: Shibin Jiang, Yushi Kaneda, Christine Speigelberg, Tao Luo